Since its founding in 1980, VDA has become an international leader in vertical transportation consulting and has provided services for over 30,000 projects involving new construction, modernization, or evaluation of equipment in an existing building.

HEADQUARTERS120 Eagle Rock Avenue, Suite 310
East Hanover, New Jersey
07936 United States

DTM has been providing over 35 years of expert consulting services. Services include designing new installations, modernizations, maintenance specifications, maintenance evaluations and inspections as licensed by New York City. CEI/CEIS certified. LEED Green Associate. Member – IAEC, NAEC, NAESA, CSI & BOMA. Involved with EESF, ASME, NAESA, New York City Code Committee. New York Office: Equitable Life Building, 120 Broadway, Suite 3640, New York , NY 10271

Queens Office:120-02 14th Road
College Point, New York
11356 United States

QEI Certified. We offer a full range of elevator services. Inspections, design, layouts, specifications, surveys, litigation, and maintenance/equipment audits with heavy emphasis on and expertise in modernization.

A full service Consulting firm, specializing in comprehensive and detailed Equipment Assessments, Maintenance Reviews, Due Diligence, Plans Review, Modernization Consultation, Specification development and Project Management. A staff with over 30+ years of unbiased expertise designed to find the best and most cost efficient solution for your problem.